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Two Squaramide-Based Fluorescent Probes for Cu and Cd. | LitMetric

The development of potential toxic metal ion probes is of great significance in the field of environmental detection. Herein, two squaramide ligands (2a, 2b) were constructed by combining the characteristics of squaric acid and imine groups. 2a and 2b can recognize Cu and Cd, with LOD of 1.26 × 10 M and 2.04 × 10 M, respectively, and have the advantages of fast response and wide pH range. The binding ratio and binding mode of the probe and the target ion were determined by Job's plot, ESI-MS, and H NMR.

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http://dx.doi.org/10.1007/s10895-024-03956-7DOI Listing

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